<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import * as echarts from 'echarts';
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'
import { listLeaveBarChart } from "@/api/backend/leave";

const animationDuration = 6000

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '500px'
    }
  },
  data() {
    return {
      chart: null,
      Barchart: null,
      xAxisData: [],
      yAxisData: [],
    }
  },
  created() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      listLeaveBarChart().then(response => {
        this.Barchart = response.rows;
        this.chart = echarts.init(this.$el, 'macarons')
        for (let i = 0; i < response.total; i++) {
          this.xAxisData.push(response.rows[i].name)
          this.yAxisData.push(response.rows[i].counts)
        }
        this.chart.setOption({
          tooltip: {
            trigger: 'axis',
            axisPointer: { // 坐标轴指示器，坐标轴触发有效
              type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
            }
          },

          grid: {
            top: 10,
            left: '2%',
            right: '2%',
            bottom: '3%',
            containLabel: true
          },

          xAxis: [{
            type: 'category',
            data: this.xAxisData,
            axisTick: {
              alignWithLabel: true
            }
          }],

          yAxis: [{
            type: 'value',
            axisTick: {
              show: true,
            }
          }],
          dataZoom: [
            {
              type: "slider",
              show: true,
              xAxisIndex: [0],
              start: 0,
              end: 30,
              textStyle: {
                color: "#C0C0C0"
              }
            },
          ],
          series: [{
            name: '请假总人数',
            type: 'bar',
            stack: 'vistors',
            barWidth: '90%',
            data: this.yAxisData,
            animationDuration
          }],
        })
      });
    }
  }
}
</script>